Influence of anchor cable failure on a supporting system of pile anchor foundation pit

Abstract

The prestressed anchor cable plays an important role in controlling the deformation of the foundation pit. The failure of anchor cable will cause a series of safety problems of foundation pit. Aiming at this problem, with a deep foundation pit in Jinan as the engineering background, the deformation laws of the supporting structure caused by the failure of single-row anchor cables and local anchor cables are studied. For the failure of a single row of anchor cables, when the first row of anchor cables fails, the horizontal displacement of the pile body is the largest at the top of the pile, which has the most obvious impact on the deformation of the supporting pile. When the first row of anchor cables fails in a combination of 1, 2, 4, 9, 17, or 34 in the positive direction of the X-axis, the horizontal displacement of the pile top at the failure point will increase with the number of anchor cable failures. the greater the increase in displacement, the greater the axial force of the two anchor cables near the point of failure.